/Engine/Source/Runtime/Engine/Public/Elements/SMInstance/SMInstanceElementId.h
Mapping between the instance ID used by typed elements and the corresponding instance index on the ISM components. This mapping will be kept up-to-date via the add/remove operations of the ISM components, as well as undo/redo.
class FSMInstanceElementIdMap : public [FGCObject](API\Runtime\CoreUObject\UObject\FGCObject)